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2018-12-23View Original

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Reply #22018-12-23
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Reply #32018-12-23
"【일일 문제 泵设备】주요 요약",
Reply #42018-12-23
"본 게시물 최종 수정者 3983526_FPPZ 2 2-Z 于 211-ZZ 于 于 2 44 수정 周一(Z218-5Z99517:ZZ1)https://bbs.hcbbs.com/thread--5Z1665Z-.html 、、G 35Z--45ZZZ是一种铸造碳钢材料指材料的抗拉强度范围为35ZMPa-45ZMPa(错误) ZG 335Z--45ZZ是一种铸造碳钢材料指材料的抗拉强度范围为335MPa-45ZMPa(错误) 周二(ZZZ8-5ZZ (1 5118-5ZZ-5ZZ)https://bbs.hcbb.com/thread-5ZZ785ZZZ-5-ZZ.html 5如果将离心泵出口阀门由关死逐渐到最大,则期间会出现:流量可以为零效率为零、汽蚀余量为零的状态(错误) 于根据泵的流量-轴功率曲线变化规律可以得出泵应该是关阀启动而不是开阀启动(正确) 周三(ZZZ8-5ZZ-5ZZ)https://bbs.hcbbs.com/thread-5ZZ85ZZZ-5-ZZ.html 3离心泵汽蚀余量值都小于Z3米。(错误) 于增大离心泵进口液体的流速能够减小泵发生汽蚀的倾向(错误) 周四(ZZZ8-5ZZ-5ZZ)https://bbs.hcbb.com/thread-5ZZ135ZZ--5-5ZZ.html 35和36L金属材质主要区别在于在于含有的其他化学成分Cr、Ni等含量不同(错误) 于出口宽离心泵出口径大叶轮切割叶轮需要斜切割外径的原因是:叶轮切割后仍能保持轴向力平衡和良好的动平衡(错误) 周五(ZZZ8-5ZZ-5ZZ)https://bbs.hcbbs.com/thread-5ZZ355ZZ5-5-5ZZ.html 3一般离心泵出厂试验项目包括性能试验、振动试验和温升试验三大方面(错误) 于泵的工作压力以泵壳体静水压试试验压力为准最高工作压力不得超过泵壳体的静水压试试验压力(错误) 周六(ZZZ8-5ZZ-5ZZ)https://bbs.hcbb.com/thread-5ZZ4434-5-5ZZ.html 3与泵配套的电机实际消耗电能=电机额定功率×运转时间(错误) 于既定的一台泵和固定的工况配套额定功率稍微一点的电机一定会更省电(错误)"

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